CN110160904A - A kind of combined type friction wear testing machine based on flexible hinge - Google Patents
A kind of combined type friction wear testing machine based on flexible hinge Download PDFInfo
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- CN110160904A CN110160904A CN201910547107.0A CN201910547107A CN110160904A CN 110160904 A CN110160904 A CN 110160904A CN 201910547107 A CN201910547107 A CN 201910547107A CN 110160904 A CN110160904 A CN 110160904A
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- 238000012360 testing method Methods 0.000 title claims abstract description 105
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 239000011888 foil Substances 0.000 claims abstract description 8
- 210000003746 feather Anatomy 0.000 claims description 26
- 238000005096 rolling process Methods 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000011068 loading method Methods 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0033—Weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention discloses a kind of combined type friction wear testing machine based on flexible hinge, including first motor, second motor, third motor, cylindrical cam, first gear, second gear, lower test specimen axis, studs, counterweight, load lead screw, pin shaft, flexible hinge, upper test specimen, first shifting slide gear, jackshaft and the second shifting slide gear, first motor drives cylindrical cam transmission to move in a straight line lower test specimen axis, upper test specimen is loaded by studs and counterweight, electric signal measurement frictional force is converted for deformation using flexible hinge and foil gauge, the switching of shifting slide gear group realization spin friction mode, pass through the fixed lower test specimen axis of pin shaft and the friction of end face axis, make the load normal pressure of end face friction using lead screw transmission, and it is provided with the loading force and frictional force of pressure sensor measurement end face.The beneficial effects of the invention are as follows achievable rotations, reciprocal and the three kinds of friction modes in end face switching, and structure is simple, low in cost, practical.
Description
Technical field
The present invention relates to a kind of frictional testing machines, and in particular to a kind of combined type friction-wear test based on flexible hinge
Machine.
Background technique
Fretting wear is present in most of mechanical equipment, due to the improper of lubricating system or to tribology mechanism
Research is not thorough, results in the waste of vast resources, while also greatly reducing production efficiency, in order to study friction material
The friction mechanism etc. of the influence and differentiated friction pair of performance, environment to fretting wear, testing machine is essential equipment, and
Testing machine on the market is expensive, figure is huge and has a single function, therefore the prior art remains to be further improved.
Summary of the invention
In view of above-mentioned testing machine there are the problem of, it is necessary to provide it is a kind of based on flexible hinge combined type fretting wear examination
Test machine, which is: decelerating motor drives cylindrical cam transmission, and lower test specimen axis and upper test specimen is made to do semicolumn pair
Reciprocating friction movement, upper test specimen and flexible hinge are connected using studs, upper test specimen is loaded by loading counterweight, logical
Flexible hinge deformation is converted electric signal measurement reciprocating friction power by overstrain piece.It is driven by dismountable cylindrical cam and sliding
Move gear set realize spin friction mode switching, loading method with it is reciprocating identical.It is provided with end face friction mandrel simultaneously under
Test specimen axis makees end face friction, and end face friction mode is loaded using lead screw transmission, and is arranged and is used for there are two pressure sensor
Measure the loading force and moment of friction of end face friction.
In order to achieve the above object, the technical solution that the present invention takes is:
A kind of combined type friction wear testing machine based on flexible hinge, it is characterised in that: including reciprocating friction component, rotation
Turn friction component and end face friction component；
The reciprocating friction component includes first motor, cylindrical cam, follower roller, slide bar, disk, lower test specimen axis, branch
Frame, flexible hinge, the first mandrel, upper test specimen, workbench, the second mandrel and load counterweight, the electric machine main shaft of the first motor
Flat key is connected with cylindrical cam, and the cylindrical cam is sequentially connected by groove type geometric profile and follower roller, the disk
Center be provided with through-hole, and be interference fitted and connect with lower test specimen axis, the upper test specimen is supported on the top of lower test specimen axis, and upper examination
Part is bonded to each other by semi-cylindrical and lower test specimen axis, and the upper end of the upper test specimen and one end spiral of studs connect, institute
The internal thread hole spiral for stating the studs other end and flexible hinge connects, and load weight is provided with above flexible hinge
Code, the load counterweight are pressed in the upper surface of flexible hinge, and the flexible hinge both ends pass through the first mandrel and the second mandrel branch
In the through-hole of two sides slipping block, the bracket vertical direction is provided with orbit of guide rail for support, and the slipping block and orbit of guide rail are mobile
Pair connection, the bracket lower part are provided with spring eye, and the spring one end is mounted in spring eye, and an end cap is in slipping block lower part
It limits in short axle；
The spin friction component includes first gear, second gear, the first shifting slide gear, jackshaft and the second sliding tooth
Wheel, the first gear flat key are connected on the overhanging shaft end of cylindrical cam, and the second gear flat key is connected to lower test specimen axis
Right axle end is provided with the sliding keyway of certain length on the jackshaft, and first shifting slide gear and feather key II are interference fitted, institute
It states the second shifting slide gear and feather key I is interference fitted, and feather key I and feather key II are connect with sliding keyway prismatic pair, in the feather key I
There is positioning flat key between feather key II, positioning flat key both ends can close respectively with one end face paste of feather key I and feather key II, and described first
Shifting slide gear, which slides into keyway right end, to slide into keyway left end with first gear engaged transmission, second shifting slide gear
It can just be with second gear engaged transmission.
The end face friction component includes pin shaft, the second motor, third motor, push rod, the motor shaft of second motor
Flat key is connected with rotary shaft, and interference is connected with the 4th gear in the rotary shaft, and the 4th gear rubs with end face is mounted on
Third gear engaged transmission on axis, the third motor connect load lead screw by shaft coupling, are provided among the push rod interior
Threaded hole II, two side bottoms are provided with slippage slot II, and the push rod forms worm drive by internal thread hole II and load lead screw 44,
The push rod is connect by two sides slippage slot II with limit guide rail prismatic pair, and the limit guide rail prismatic pair is connected with slip base,
The slip base is provided with through-hole, and the pin shaft is each passed through the through-hole of through-hole and two sides slip base on lower test specimen axis.
As a preferred technical solution of the present invention, the follower roller and slide bar are rigidly connected, the slide bar and side
The rigid connection of shape nut, the lead screw upper and lower ends are fixedly mounted on the inside of disk, can only do the rotation of dead axle, the lead screw
Sponson successively spiral is connected with square nut and locking nut, the follower roller, slide bar, square nut from inside to outside
With locking nut arrangement two symmetrical above and below.
As a preferred technical solution of the present invention, the lower test specimen axis both ends are supported on bearing block by linear bearing
On, through roller bearings on rolling bearing pedestal, end face friction mandrel both ends pass through the axis of rolling at the jackshaft both ends
It holds and is supported on rolling bearing pedestal, the load lead screw, which is supported on lead screw base, does fixed-axis rotation, and the linear bearing seat is fixed
On the table；The rolling bearing is by rolling bearing pedestal and fixes on the table；The first motor passes through motor cabinet
It fixes on the table, second motor is fixed on the table by motor cabinet, and the third motor is solid by motor cabinet
Determine on the table；The bracket, load lead screw base and limit guide rail are bolted on workbench, the workbench
Quadrangle stabilizer blade has been bolted.
As a preferred technical solution of the present invention, the flexible hinge by both ends rigid plate, intermediate rigid plate so
And the flexible board being connected with two rigid plates is formed, the both ends rigid plate be provided with horizontal direction through-hole and the first mandrel and
The connection of second central axis, the thickness of the flexible board is much smaller than rigid plate, and is had flexible deformation by the power of horizontal direction
Ability, flexible hinge center vertical direction are provided with internal thread hole I and connect with studs spiral, the two sides of the flexible board
Post foil gauge.
As a preferred technical solution of the present invention, the outside of the friction part of the upper test specimen and lower test specimen axis is arranged
There is temperature sensor, the lower test specimen axis and disk junction are provided with velocity sensor, and the temperature sensor and speed pass
Sensor is each attached on workbench.
As a preferred technical solution of the present invention, the slipping block is made of upper end cover and lower base, and passes through spiral shell
Nail connection top and the bottom, the lower base inside are equipped with first pressure sensor and second pressure sensor by stepped hole,
The extended line of the first pressure sensor and second pressure sensor intersects at the axis of wiring hole, and the slipping block bottom is opened
There is slippage slot I to connect with limit guide rail prismatic pair, in the slot of the first pressure sensor installation in the vertical direction, and it is described
Pin shaft is pressed on first sensor, and for measuring the pressure of pin shaft transmitting, the second pressure sensor installation is in the horizontal direction
On slot in, and be mounted on the center line of push rod, for measuring the pressure of push rod.
As a preferred technical solution of the present invention, the end face friction mandrel and lower test specimen axis coaxial line are arranged.
The beneficial effects of the present invention are:
One, rotation, reciprocal and the three kinds of friction modes in end face switching can be achieved, and switching mode is simple, it is low in cost, it is real
It is strong with property.
Two, the method that frictional force is measured using Double side flexible hinge amount of deflection deformation indirectly, and both sides foil gauge can be passed through
Signal difference, in time check loading force whether off center line, to improve the stability of output data.
Detailed description of the invention
Fig. 1 is testing machine overall structure axis side of the present invention schematic diagram；
Fig. 2 is testing machine overall structure schematic top plan view of the present invention；
Fig. 3 is testing machine overall structure schematic side view of the present invention；
Fig. 4 is another visual angle schematic diagram of testing machine overall structure of the present invention；
Fig. 5 is the end face friction-loaded system structure diagram of testing machine of the present invention；
Fig. 6 is cylindrical cam of the present invention and disk connection type structural schematic diagram；
Fig. 7 is shifting slide gear group kind of drive schematic diagram of the present invention；
Fig. 8 is flexible hinge support construction schematic diagram of the present invention；
Fig. 9 is the structural schematic diagram of flexible hinge of the present invention；
Figure 10 is partial schematic sectional view inside slip base of the present invention；
Figure 11 is slip base axis side structure schematic diagram of the present invention；
Figure 12 is pusher structure schematic diagram of the present invention.
In figure: 1, first motor；2, cylindrical cam；3, follower roller；4, first gear；5, slide bar；6, second gear；7,
Disk；8, lower test specimen axis；9, linear bearing seat；10, rolling bearing pedestal；11, the first shifting slide gear；12, jackshaft；13, second
Shifting slide gear；14, bracket；15, slipping block；16, flexible hinge；17, the first mandrel；18, foil gauge；19, upper test specimen；20,
One motor cabinet；21, workbench；22, stabilizer blade；23, stabilizer blade nut；24, the second mandrel；25, studs；26, counterweight is loaded；
27, lead screw base is loaded；28, pin shaft；29, temperature sensor；30, velocity sensor；31, square nut；32, the first lead screw；33,
Locking nut；34, guide rail；35, end face friction mandrel；36, third gear；37, bearing block；38, the second motor cabinet；39, the second electricity
Machine；40, the 4th gear；41, rotary shaft；42, third motor；43, shaft coupling；44, lead screw is loaded；45, slip base；46, push rod；
47, third motor cabinet；48, feather key I；49, feather key II；50, flat key is positioned；51, spring；201, the overhanging shaft part of cylindrical cam；
1401, orbit of guide rail；1402, spring eye；1501, short axle is limited；1502, slipping block through-hole；1601, both ends rigid plate；1602,
Flexible board；1603, intermediate rigid plate；1604, through-hole；1605, threaded hole I；4501, slip base upper end cover；4502, under slip base
Pedestal；4503, first pressure sensor；4504, second pressure sensor；4505, wiring hole；4506, screw；4507, it slides
Slot I；4601, threaded hole II；4602, slippage slot II.
Specific embodiment
Referring to the drawings, a specific embodiment of the invention is provided, for illustrating the working principle of the invention.
A kind of combined type friction wear testing machine based on flexible hinge, it is characterised in that: including reciprocating friction component, rotation
Turn friction component and end face friction component；
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, the reciprocating friction component include first motor 1,
Cylindrical cam 2, follower roller 3, slide bar 5, disk 7, lower test specimen axis 8, bracket 14, flexible hinge 16, the first mandrel 17, upper test specimen
19, workbench 21, the second mandrel 24 and load counterweight 26, the electric machine main shaft flat key of the first motor 1 are connected with cylindrical cam
2, the cylindrical cam 2 is sequentially connected by groove type geometric profile and follower roller 3, and the center of the disk 7 is provided with through-hole,
And be interference fitted and connect with lower test specimen axis 8, the upper test specimen 19 is supported on the top of lower test specimen axis 8, and upper test specimen 19 passes through half
Cylindrical surface is bonded to each other with lower test specimen axis 8, and the upper end of the upper test specimen 19 is connect with one end spiral of studs 25, described double
25 other end of header stud is connect with 1605 spiral of internal thread hole of flexible hinge 16, and is provided with and is added in the top of flexible hinge 16
Counterweight 26 is carried, the load counterweight 26 is pressed in the upper surface of flexible hinge 16, and 16 both ends of flexible hinge pass through the first mandrel
17 and second mandrel 24 be supported in the through-hole 1502 of two sides slipping block 15,14 vertical direction of bracket is provided with orbit of guide rail
1401, the slipping block 15 is connect with 1401 prismatic pair of orbit of guide rail, and 14 lower part of bracket is provided with spring eye 1402, the bullet
51 one end of spring is mounted in spring eye 1402, and an end cap is in the limit short axle 1501 of 15 lower part of slipping block.Upper test specimen 19 is under
Test specimen axis 8 constitutes that friction is secondary, and spring 51 provides the freedom degree of vertical direction to flexible hinge, make the loading force of counterweight 26 by with
The studs of flexible hinge connection passes to test specimen 19.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 7, the spin friction component includes first gear 4, the cunning of second gear 6, first
It moves gear 11, jackshaft 12 and the second shifting slide gear 13,4 flat key of first gear and is connected to the overhanging shaft end 201 of cylindrical cam 2
On, 6 flat key of second gear is connected to the right axle end of lower test specimen axis, and the sliding key of certain length is provided on the jackshaft 12
Slot, first shifting slide gear 11 are interference fitted with feather key II 49, and second shifting slide gear 13 is interference fitted with feather key I 48,
And feather key I 48 and feather key II 49 are connect with sliding keyway prismatic pair, have positioning flat key between the feather key I 48 and feather key II 49
50, positioning 50 both ends of flat key can close respectively with one end face paste of feather key I 48 and feather key II 49, and first shifting slide gear 11 slides into
Keyway right end can just slide into keyway left end with the engaged transmission of first gear 4, second shifting slide gear 13 can just be with
6 engaged transmission of second gear.By the engagement of shifting slide gear group, torque is transmitted by jackshaft 12, positioning flat key 50 is for solid
Determine shifting slide gear, keeps its stable drive reliable, and be conveniently disengaged from.
As shown in Figure 1, Figure 2, the end face friction component shown in Fig. 4, Fig. 5, Figure 10, Figure 11 and Figure 12 includes pin shaft 28, second
Motor 39, third motor 42, push rod 46, the motor shaft flat key of second motor 39 are connected with rotary shaft 41, the rotary shaft
Interference is connected with the 4th gear 40 on 41, and the 4th gear 40 is engaged with the third gear 36 being mounted on end face friction mandrel 35
Transmission, the third motor 42 connect load lead screw 44 by shaft coupling, are provided with internal thread hole II 4601 among the push rod 46,
Two side bottoms are provided with slippage slot II 4602, and the push rod 46 forms spiral by internal thread hole II 4601 and load lead screw 44 and passes
Dynamic, the push rod 46 is connect by two sides slippage slot II 4602 with 34 prismatic pair of limit guide rail, 34 prismatic pair of limit guide rail
It is connected with slip base 45, the slip base 45 is provided with through-hole, and the pin shaft 28 is each passed through through-hole and two sides on lower test specimen axis 8
The through-hole of slip base 45.Second motor 39 and load lead screw 44 provide loading force, slip base 45 are pushed by push rod 46, because of pin shaft
28 are each passed through the through-hole of the through-hole and two sides slip base 45 on lower test specimen axis 8, and lower test specimen axis 8 is made to be tightly pressed against end face friction mandrel
On 35, slip base third motor 42 provides driving torque, so that end face friction mandrel 35 is rotated, thus with fixed lower test specimen
Axis 8 makees end face fricting movement.
As a preferred technical solution of the present invention, the follower roller 3 is rigidly connected with slide bar 5, the slide bar 5 with
Square nut 31 is rigidly connected, and 32 upper and lower ends of lead screw are fixedly mounted on the inside of disk 7, can only do the rotation of dead axle,
Successively spiral is connected with square nut 31 and locking nut 33, the follower roller to the sponson of the lead screw 32 from inside to outside
3, slide bar 5, square nut 31 and locking nut 33 arrangement two symmetrical above and below.Pass through the transmission force that is rigidly connected, cylindrical cam 2
Transmission imparts power to disk 7, lower 8 interference of the test specimen axis connection of disk 7, to keep lower test specimen axis 8 reciprocating.
As a preferred technical solution of the present invention, lower 8 both ends of test specimen axis are supported on bearing by linear bearing
On seat 9, through roller bearings on rolling bearing pedestal 10,35 both ends of end face friction mandrel are logical at 12 both ends of jackshaft
Roller bearings are crossed on rolling bearing pedestal 37, the load lead screw 44, which is supported on lead screw base 27, does fixed-axis rotation, described
Linear bearing seat 9 is fixed on workbench 21；The rolling bearing is fixed on workbench 21 by rolling bearing pedestal 10 and 37；
The first motor 1 is fixed on workbench 21 by motor cabinet 20, and second motor 39 is fixed on work by motor cabinet 38
Make on platform 21, the third motor 42 is fixed on workbench 21 by motor cabinet 47；The bracket 14, load 27 and of lead screw base
Limit guide rail 34 is bolted on workbench 21, and the quadrangle of the workbench is connected with stabilizer blade 22 by bolt 23.
As a preferred technical solution of the present invention, the flexible hinge 16 is by both ends rigid plate 1601, intermediate rigidity
Plate 1603 and the flexible board 1602 that is connected with two rigid plates formed, the both ends rigid plate 1601 is provided with horizontal direction
Through-hole 1604 and the first mandrel 17 and the second mandrel 24 be rotatablely connected, the thickness of the flexible board 1602 is much smaller than rigid plate
1601, and the ability by the power of horizontal direction with flexible deformation, the 16 center vertical direction of flexible hinge is provided with internal screw thread
Hole I 1605 is connect with studs spiral, and foil gauge 18 is posted in the two sides of the flexible board 1602.Made by reciprocating friction power
Flexible board 1602 generates amount of deflection deformation, and the signal magnitude that foil gauge 18 is posted in the two sides of flexible board 1602 can demarcate frictional force
Size.
As a preferred technical solution of the present invention, the outside of the upper test specimen 19 and the friction part of lower test specimen axis 8
It is provided with temperature sensor 29, the lower test specimen axis 8 and 7 junction of disk are provided with velocity sensor 30, the temperature sensing
Device 29 and velocity sensor 30 are each attached on workbench 21.
As a preferred technical solution of the present invention, the slipping block 45 is by upper end cover 4501 and 4502 groups of lower base
At, and top and the bottom are connected by screw 4506, first pressure is equipped with by stepped hole inside the lower base 4502 and is sensed
Device 4503 and second pressure sensor 4504, the extended line of the first pressure sensor 4503 and second pressure sensor 4504
The axis of wiring hole 4505 is intersected at, 45 bottom of slipping block is provided with slippage slot I 4507 and connect with 34 prismatic pair of limit guide rail,
In the slot of the installation of first pressure sensor 4503 in the vertical direction, and the pin shaft 28 is pressed on first sensor
4503, for measuring the pressure of pin shaft transmitting, the second pressure sensor 4503 is installed in slot in the horizontal direction, and is pacified
On the center line of push rod 46, for measuring the pressure of push rod.
As a preferred technical solution of the present invention, the end face friction mandrel 35 is arranged with lower 8 coaxial line of test specimen axis.
When specifically used, for the switching of three kinds of differentiated friction modes, it is given below and realizes the corresponding of differentiated friction mode
Application method.
To do reciprocating friction test, the first shifting slide gear should be slid by keyway on jackshaft at this time, with the first tooth
Wheel exits engagement, and the second shifting slide gear is exited with second gear and engage by keyway sliding on jackshaft, cylindrical cam be servo-actuated
Roller transmission cooperation, pin shaft is inserted into, and limits the rotary motion of axis, and starting first motor drives cylindrical cam and follower roller straight
Line transmission, because of follower roller rigid connection slide bar, square nut of the slide bar rigid connection by locking nut locking, by active force
It is transmitted on the lead screw being connect with nut screw pair, lead screw is fixedly mounted on inside disk, is driven and lower test specimen axis by lead screw
The disk of interference connection, makes lower test specimen axis move reciprocatingly, and loads the loading force of counterweight leading by two sides slipping block and bracket
The sliding pair and studs of rail track, transfer the pressure to upper test specimen by screw pair, make test specimen generation squeezing action up and down,
And the reciprocating friction test of cylindrical pair is realized under the reciprocating motion of lower test specimen axis.
To do spin friction test, the first shifting slide gear should be slid by keyway on axis at this time, with first gear into
Enter engagement, the second shifting slide gear is entered with second gear and engaged by keyway sliding on axis, and rotation locking nut exits locking shape
State simultaneously disassembles, and rotates the lead screw of fixed-axis rotation, makes square nut that follower roller be driven to move in a straight line, follower roller and circle
Column cam, which exits, to be engaged and disassembles, and pin shaft is transferred to the through-hole of slip base and lower test specimen axis, is started in first motor process
Between the transition of axis transmit torque, drive lower test specimen axis to make rotating motion, load loading method realizes cylindrical pair with reciprocating load
The test of spin friction.
To do end face friction test, the first shifting slide gear should be slid by keyway on jackshaft at this time, with the first tooth
Wheel exits engagement, and the second shifting slide gear is exited with second gear and engaged by keyway sliding on jackshaft, and rotation locking nut moves back
It locking state and disassembles out, rotates the lead screw of fixed-axis rotation, make square nut that follower roller be driven to move in a straight line, be servo-actuated
Roller is exited with cylindrical cam to be engaged and disassembles, and pin shaft is inserted into the through-hole of slip base and lower test specimen axis, first motor
It closes, third electric motor starting, slip base is pushed by lead screw and push rod, pressure is through second pressure sensor, slip base and pin shaft
It is transmitted to lower test specimen axis, makes lower test specimen axis that normal pressure is contacted and generated with end face friction mandrel, starts the second motor, through third gear
Torque is transmitted in engagement with the 4th gear, so that end face friction mandrel is done the rotary motion of dead axle, is held with the end face of lower test specimen axis
Face friction test.
When moving reciprocatingly, the reaction force of the frictional force between upper and lower test specimen causes flexible hinge flexible board to occur
Deformation, and the foil gauge through pasting at deformation is converted into electric signal, and frictional force size can be measured by friction force calibration.End face friction
When, the second pressure sensor inside slip base can measure the size of loading force, by pin shaft by end-face friction when rotation
Square is transmitted to first pressure sensor, and the size of end-face friction square approximate can be acquired using lever rule.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, those skilled in the art answer, when
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of combined type friction wear testing machine based on flexible hinge, it is characterised in that: including reciprocating friction component, rotation
Friction component and end face friction component；
The reciprocating friction component include first motor (1), cylindrical cam (2), follower roller (3), slide bar (5), disk (7),
Lower test specimen axis (8), bracket (14), flexible hinge (16), the first mandrel (17), upper test specimen (19), workbench (21), the second mandrel
(24) and load counterweight (26), the electric machine main shaft flat key of the first motor (1) are connected with cylindrical cam (2), and the cylinder is convex
It takes turns (2) to be sequentially connected by groove type geometric profile and follower roller (3), the center of the disk (7) is provided with through-hole, and under
Test specimen axis (8) interference fit connection, the upper test specimen (19) is supported on the top of lower test specimen axis (8), and upper test specimen (19) passes through
Semi-cylindrical is bonded to each other with lower test specimen axis (8), and the upper end of the upper test specimen (19) and one end spiral of studs (25) connect
It connects, studs (25) other end is connect with internal thread hole (1605) spiral of flexible hinge (16), and in flexible hinge
(16) load counterweight (26) is provided with above, load counterweight (26) is pressed in the upper surface of flexible hinge (16), described soft
Property hinge (16) both ends the through-holes (1502) of two sides slipping block (15) is supported on by the first mandrel (17) and the second mandrel (24)
Interior, bracket (14) vertical direction is provided with orbit of guide rail (1401), and the slipping block (15) and orbit of guide rail (1401) are mobile
Pair connection, bracket (14) lower part are provided with spring eye (1402), and described spring (51) one end is mounted in spring eye (1402),
One end cap is in the limit short axle (1501) of slipping block (15) lower part；
The spin friction component include first gear (4), second gear (6), the first shifting slide gear (11), jackshaft (12) and
Second shifting slide gear (13), first gear (4) flat key are connected on cylindrical cam (2) overhanging shaft end (201), and described second
Gear (6) flat key is connected to the right axle end of lower test specimen axis, and the sliding keyway of certain length is provided on the jackshaft (12), described
First shifting slide gear (11) and feather key II (49) are interference fitted, and second shifting slide gear (13) and feather key I (48) are interference fitted,
And feather key I (48) and feather key II (49) are connect with sliding keyway prismatic pair, are had between the feather key I (48) and feather key II (49)
It positioning flat key (50), positioning flat key (50) both ends can close respectively with one end face paste of feather key I (48) and feather key II (49), and described the
One shifting slide gear (11) slides into keyway right end can just be with first gear (4) engaged transmission, second shifting slide gear (13)
Sliding into keyway left end can just be with second gear (6) engaged transmission.
The end face friction component includes pin shaft (28), the second motor (39), third motor (42), push rod (46), and described second
The motor shaft flat key of motor (39) is connected with rotary shaft (41), and interference is connected with the 4th gear (40) on the rotary shaft (41),
4th gear (40) and third gear (36) engaged transmission being mounted on end face friction mandrel (35), the third motor
(42) load lead screw (44) is connected by shaft coupling, is provided with internal thread hole II (4601), two side bottoms among the push rod (46)
It is provided with slippage slot II (4602), the push rod (46) forms spiral by internal thread hole II (4601) and load lead screw (44) and passes
Dynamic, the push rod (46) is connect by two sides slippage slot II (4602) with limit guide rail (34) prismatic pair, the limit guide rail
(34) prismatic pair is connected with slip base (45), and the slip base (45) is provided with through-hole, and the pin shaft (28) is each passed through lower test specimen
The through-hole of through-hole and two sides slip base (45) on axis (8).
2. a kind of combined type friction wear testing machine based on flexible hinge according to claim 1, which is characterized in that institute
It states follower roller (3) and slide bar (5) to be rigidly connected, the slide bar (5) and square nut (31) are rigidly connected, the lead screw (32)
Upper and lower ends are fixedly mounted on the inside of disk (7), can only do the rotation of dead axle, the sponson of the lead screw (32) is by introversion
Successively spiral is connected with square nut (31) and locking nut (33), the follower roller (3), slide bar (5), square nut outside
(31) and locking nut (33) it is symmetrical above and below arrangement two.
3. a kind of combined type friction wear testing machine based on flexible hinge according to claim 1, which is characterized in that institute
It states lower test specimen axis (8) both ends to be supported on bearing block (9) by linear bearing, jackshaft (12) both ends pass through rolling bearing
It is supported on rolling bearing pedestal (10), end face friction mandrel (35) both ends are by roller bearings in rolling bearing pedestal (37)
On, the load lead screw (44), which is supported on lead screw base (27), does fixed-axis rotation, and the linear bearing seat (9) is fixed on workbench
(21) on；The rolling bearing is fixed on workbench (21) by rolling bearing pedestal (10) and (37)；The first motor (1)
It is fixed on workbench (21) by motor cabinet (20), second motor (39) is fixed on workbench by motor cabinet (38)
(21) on, the third motor (42) is fixed on workbench (21) by motor cabinet (47)；The bracket (14), load lead screw
Seat (27) and limit guide rail (34) are bolted on workbench (21), and the quadrangle of the workbench passes through bolt (23)
It is connected with stabilizer blade (22).
4. a kind of combined type friction wear testing machine based on flexible hinge according to claim 1, which is characterized in that institute
State flexible hinge (16) by both ends rigid plate (1601), intermediate rigid plate (1603) and the flexibility that is connected with two rigid plates
Plate (1602) is formed, and the both ends rigid plate (1601) is provided with through-hole (1604) and the first mandrel (17) and the of horizontal direction
The thickness of two mandrels (24) rotation connection, the flexible board (1602) is much smaller than rigid plate (1601), and by the power of horizontal direction
Ability with flexible deformation, flexible hinge (16) the center vertical direction are provided with internal thread hole I (1605) and studs
Spiral connection, foil gauge (18) are posted in the two sides of the flexible board (1602).
5. a kind of combined type friction wear testing machine based on flexible hinge according to claim 1, which is characterized in that institute
It states and is provided with temperature sensor (29) on the outside of the friction part of test specimen (19) and lower test specimen axis (8), the lower test specimen axis (8)
It is provided with velocity sensor (30) with disk (7) junction, the temperature sensor (29) and velocity sensor (30) are fixed
On workbench (21).
6. a kind of combined type friction wear testing machine based on flexible hinge according to claim 1, which is characterized in that institute
It states slipping block (45) to be made of upper end cover (4501) and lower base (4502), and connects top and the bottom, institute by screw (4506)
It states lower base (4502) inside and first pressure sensor (4503) and second pressure sensor (4504) is equipped with by stepped hole,
The extended line of the first pressure sensor (4503) and second pressure sensor (4504) intersects at the axis of wiring hole (4505)
Line, slipping block (45) bottom are provided with slippage slot I (4507) and connect with limit guide rail (34) prismatic pair, and the first pressure passes
In the slot of sensor (4503) installation in the vertical direction, and the pin shaft (28) is pressed on first sensor (4503), for surveying
The pressure of pin shaft transmitting is measured, the second pressure sensor (4503) is installed in slot in the horizontal direction, and is mounted on push rod
(46) on center line, for measuring the pressure of push rod.
7. a kind of combined type friction wear testing machine based on flexible hinge according to claim 1, which is characterized in that institute
It states end face friction mandrel (35) and lower test specimen axis (8) coaxial line is arranged.
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| CN201910547107.0A CN110160904A (en) | 2019-06-24 | 2019-06-24 | A kind of combined type friction wear testing machine based on flexible hinge |
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| CN201910547107.0A CN110160904A (en) | 2019-06-24 | 2019-06-24 | A kind of combined type friction wear testing machine based on flexible hinge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111060311A (en) * | 2019-12-25 | 2020-04-24 | 慈兴集团有限公司 | Improvement type ball efficiency test frock |
| CN112697451A (en) * | 2020-11-30 | 2021-04-23 | 中国汽车工程研究院股份有限公司 | In-line type switching structure of material friction abnormal sound test bed |
| CN112945738A (en) * | 2021-01-29 | 2021-06-11 | 中国原子能科学研究院 | Mechanical test device |
| CN113267418A (en) * | 2021-06-28 | 2021-08-17 | 青岛征和工业股份有限公司 | Chain hinge pair wear resistance test device and method |
| CN114112896A (en) * | 2021-11-30 | 2022-03-01 | 华侨大学 | Skis high-speed friction performance testing device and testing method thereof |
| CN115078149A (en) * | 2022-08-22 | 2022-09-20 | 济南益华摩擦学测试技术有限公司 | High-frequency fretting corrosion wear testing machine |
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|---|---|---|---|---|
| CN111060311A (en) * | 2019-12-25 | 2020-04-24 | 慈兴集团有限公司 | Improvement type ball efficiency test frock |
| CN112697451A (en) * | 2020-11-30 | 2021-04-23 | 中国汽车工程研究院股份有限公司 | In-line type switching structure of material friction abnormal sound test bed |
| CN112697451B (en) * | 2020-11-30 | 2023-10-24 | 中国汽车工程研究院股份有限公司 | In-line switching structure of material friction abnormal sound test bed |
| CN112945738A (en) * | 2021-01-29 | 2021-06-11 | 中国原子能科学研究院 | Mechanical test device |
| CN112945738B (en) * | 2021-01-29 | 2022-08-09 | 中国原子能科学研究院 | Mechanical test device |
| CN113267418A (en) * | 2021-06-28 | 2021-08-17 | 青岛征和工业股份有限公司 | Chain hinge pair wear resistance test device and method |
| CN113267418B (en) * | 2021-06-28 | 2023-01-10 | 青岛征和工业股份有限公司 | Chain hinge pair wear resistance test device and method |
| CN114112896A (en) * | 2021-11-30 | 2022-03-01 | 华侨大学 | Skis high-speed friction performance testing device and testing method thereof |
| CN114112896B (en) * | 2021-11-30 | 2023-10-20 | 华侨大学 | High-speed friction performance testing device and testing method for snowboard |
| CN115078149A (en) * | 2022-08-22 | 2022-09-20 | 济南益华摩擦学测试技术有限公司 | High-frequency fretting corrosion wear testing machine |
| CN115078149B (en) * | 2022-08-22 | 2022-11-04 | 济南益华摩擦学测试技术有限公司 | High-frequency fretting corrosion wear testing machine |
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